CoinsCalendar is a cryptocurrency events calendar. You will be first to know about all upcoming hard fork, exchange listings, releases, updates, conferences etc. Coins Calendar is a simple calendar of events with dates and times for coin meetings, happenings and more. You can submit your own events on the site as well.
There is a telegram notifier group that you can also sign up for to get notified when events get added in and 'to do' list where the developers of this site list out the things they want to add moving forward. You can also find the CoinsCalendar on Twitter.